[DennisP]

More detailed stats on Ethereum validators are here: https://dune.com/hildobby/ETH2-Deposits

Currently there are 79,717 distinct depositor addresses. They list 36 known entities validating, accounting for about 75% of staked ETH. So that leaves about 100K validators split among small unknown entities. Many of those would be home stakers.

Some of the known entities are staking pools, representing lots people who own the stake. But it's only the pool producing the blocks. Bitcoin is similar: lots of home miners but they're mostly in pools, not attempting to create blocks on their own.

For the number of entities creating Bitcoin blocks, I just found this paper, which doesn't give a total number but says 55 to 60 miners control at least half of Bitcoin mining: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3942181

I wouldn't expect the number of independent (i.e. unpooled) Bitcoin miners to be especially large, since a fairly large investment is required to have a chance of producing a block in a given year.